/* ============================================================
   National Point — Products Page Styles (Slider Layout)
   ============================================================ */

/* ─── Collection Hero ──────────────────────────────────────── */
.collection-hero {
  background: var(--color-bg-warm);
  border-bottom: 1px solid var(--color-border);
  padding: calc(var(--nav-height) + 3rem) 0 3rem;
}
.collection-hero__title {
  font-family: var(--font-en);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 300;
  color: var(--color-cream);
  line-height: 1;
  margin: 0.6rem 0 0.8rem;
  letter-spacing: -0.01em;
}
.collection-hero__sub {
  font-family: var(--font-jp);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ─── Sticky Category Nav ──────────────────────────────────── */
.cat-nav {
  position: sticky;
  top: var(--nav-height);
  z-index: 100;
  background: rgba(10,9,7,0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}
.cat-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1.6rem;
}
.cat-nav__tabs {
  display: flex;
  gap: 0.3rem;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
}
.cat-nav__tabs::-webkit-scrollbar { display: none; }

.cat-tab {
  padding: 0.45rem 1.1rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border: 1px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  background: transparent;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.cat-tab:hover { color: var(--color-cream); border-color: var(--color-border-light); }
.cat-tab.active {
  color: var(--color-gold);
  border-color: var(--color-gold);
  background: rgba(184,151,90,0.08);
}

.sort-select {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 0.45rem 2.2rem 0.45rem 1rem;
  cursor: pointer;
  transition: border-color var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239a9080' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  flex-shrink: 0;
}
.sort-select:focus { border-color: var(--color-gold); outline: none; }
.sort-select option { background: var(--color-bg-warm); }

/* ─── Catalog Wrapper ──────────────────────────────────────── */
.catalog {
  padding: 0 0 var(--spacing-2xl);
}

/* ─── Category Section ─────────────────────────────────────── */
.cat-section {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}
.cat-section:last-child { border-bottom: none; }

.cat-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1.6rem;
}
.cat-section__head-left {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}
.cat-section__title {
  font-family: var(--font-en);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 300;
  color: var(--color-cream);
  letter-spacing: 0.04em;
  margin: 0;
}
.cat-section__all {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}
.cat-section__all:hover { color: var(--color-gold); }
.cat-section__all span { transition: transform var(--transition-fast); }
.cat-section__all:hover span { transform: translateX(4px); }

/* ─── Slider Outer (full-bleed scroll zone) ────────────────── */
.slider-outer {
  position: relative;
  /* 左端はcontainerのpadding分引き込む */
  padding-left: max(1.5rem, calc((100vw - 1280px) / 2 + 1.5rem));
}

/* ─── Slider Track ─────────────────────────────────────────── */
.slider-track {
  display: flex;
  align-items: stretch;        /* 全カードをトラックの高さに揃える */
  gap: 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-right: 3rem;
  padding-bottom: 8px;
}
.slider-track::-webkit-scrollbar { display: none; }

/* ─── Slider Cards ─────────────────────────────────────────── */

/*
 * カードは flex-column で「画像エリア固定 + 情報エリア固定」の
 * 2段構造にすることで、全カードの高さを完全に揃える。
 */
.slider-card {
  flex: 0 0 var(--card-w, 200px);
  width: var(--card-w, 200px);
  min-width: var(--card-w, 200px);  /* 幅が縮まないよう3重定義 */
  max-width: var(--card-w, 200px);
  scroll-snap-align: start;
  position: relative;
  cursor: pointer;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease;
  background: var(--color-bg);
}
.slider-card:hover { transform: translateY(-4px); }

/* カード幅の定義 — PCは5枚分見える計算 */
@media (min-width: 1200px) {
  .slider-track { --card-w: calc((100vw - max(3rem, (100vw - 1280px) + 3rem)) / 5 - 1rem); }
}
@media (min-width: 900px) and (max-width: 1199px) {
  .slider-track { --card-w: calc((100vw - 3rem) / 4 - 1rem); }
}
@media (min-width: 600px) and (max-width: 899px) {
  .slider-track { --card-w: calc((100vw - 3rem) / 3 - 1rem); }
}
@media (max-width: 599px) {
  .slider-track { --card-w: calc((100vw - 2.5rem) / 2.2 - 1rem); }
}

/* ── 画像エリア：固定高さで完全統一 ── */
.slider-card__image-wrap {
  position: relative;
  width: 100%;
  /* aspect-ratio だけでなく高さも calc で固定して確実に揃える */
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-surface);
  flex-shrink: 0;
  flex-grow: 0;
  /* 背景色でローディング中も枠が崩れない */
  background-color: #1a1712;
}
.slider-card__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
  transition: transform 0.5s ease;
  /* 画像が読み込まれる前も枠を保持 */
  will-change: transform;
}
.slider-card:hover .slider-card__image { transform: scale(1.04); }

/* Badge */
.slider-card__badge {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.28rem 0.6rem;
  z-index: 2;
  line-height: 1;
}
.slider-card__badge--new     { background: var(--color-gold); color: var(--color-bg); }
.slider-card__badge--limited { background: #c96c2a; color: #fff; }
.slider-card__badge--sale    { background: #e05; color: #fff; }

/* Quick Add overlay */
.slider-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,9,7,0.55);
  display: flex;
  align-items: flex-end;
  padding: 0.8rem;
  opacity: 0;
  transition: opacity 0.25s ease;
  z-index: 3;
}
.slider-card:hover .slider-card__overlay { opacity: 1; }
.slider-card__quick-add {
  width: 100%;
  font-size: 0.65rem;
  padding: 0.55rem 0.8rem;
  letter-spacing: 0.12em;
}

/* ── 情報エリア：高さを fixed height で完全統一 ── */
.slider-card__info {
  padding: 0.75rem 0.1rem 0;
  height: 5.6rem;          /* 全カード同一の固定高さ */
  flex-shrink: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 0;
  box-sizing: border-box;
}
.slider-card__cat {
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.2rem;
  flex-shrink: 0;
  line-height: 1;
}
.slider-card__name {
  font-family: var(--font-en);
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--color-cream);
  line-height: 1.3;
  margin: 0 0 0.15rem;
  /* 2行まで表示、はみ出したら省略 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-shrink: 0;
}
.slider-card__material {
  font-family: var(--font-jp);
  font-size: 0.62rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-shrink: 0;
}
.slider-card__price {
  font-family: var(--font-en);
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--color-cream);
  margin-top: auto;        /* 価格を常に一番下に揃える */
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

/* ─── Arrow Buttons ────────────────────────────────────────── */
.slider-arrow {
  position: absolute;
  top: 38%; /* 画像の中央あたり */
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background: rgba(10,9,7,0.85);
  border: 1px solid var(--color-border-light);
  color: var(--color-cream);
  font-size: 1.4rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s;
  opacity: 0;
}
.slider-outer:hover .slider-arrow { opacity: 1; }
.slider-arrow:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-bg);
}
.slider-arrow--prev { left: max(0.2rem, calc((100vw - 1280px) / 2 - 0.5rem)); }
.slider-arrow--next { right: 0.5rem; }

/* タッチデバイスでは常に表示 */
@media (hover: none) {
  .slider-arrow { opacity: 1; width: 32px; height: 32px; font-size: 1.1rem; }
}

/* ─── Empty state for category ─────────────────────────────── */
.cat-section--empty { display: none; }

/* ─── Shopify CTA ───────────────────────────────────────────── */
.shopify-cta {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
}
.shopify-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}
.shopify-cta__title {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-cream);
  margin: 0.4rem 0;
  letter-spacing: 0.04em;
}
.shopify-cta__desc {
  font-family: var(--font-jp);
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.shopify-cta__badges {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  flex-shrink: 0;
}
.trust-badge {
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--color-border-light);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .cat-nav__inner { flex-direction: column; align-items: flex-start; gap: 0.6rem; padding: 0.7rem 0; }
  .cat-nav__sort  { align-self: flex-start; }
  .cat-section    { padding: var(--spacing-lg) 0 var(--spacing-md); }
  .cat-section__head { margin-bottom: 1.2rem; }
  .shopify-cta__inner { flex-direction: column; align-items: flex-start; }
  .slider-arrow { width: 30px; height: 30px; font-size: 1rem; }
  .slider-arrow--prev { left: 0.2rem; }
}
@media (max-width: 480px) {
  .collection-hero { padding-top: calc(var(--nav-height) + 2rem); padding-bottom: 2rem; }
  .cat-tab { padding: 0.4rem 0.9rem; font-size: 0.62rem; }
  .slider-outer { padding-left: 1rem; }
  .slider-card__name { font-size: 0.78rem; }
  .slider-card__price { font-size: 0.82rem; }
}